It was a day when the trapdoor opened - we're at the end of the opening rounds of Skandia Sail for Gold 2010. The Gold fleets will be separated out tonight, and tomorrow we get down to the business end of the regatta.

If you went through the trapdoor into the silver fleet today, there's no way back. Meanwhile, at the top end the high-fliers from the first three days were roped up and hauled back into the pack - the leaderboard has got tighter almost everywhere.

If you want to see some seriously intense competition, look no further than the Women's 470 fleet. World Champions, Lisa Westerhof and Lobke Berkhout (NED) overhauled the Japanese pair of Ai Kondo and Wakako Tabata today - and they did it despite a black flag disqualification in the first race - going on to win the second. They say that champions are measured by their response to adversity, and if so, these two are real champions.

Westerhof said afterwards, "Everyone is sailing really up and down and the fleet isn't very consistent, apart from the Japanese who are having a good series. Although we haven't been consistent, we have managed to get to the top, but it doesn't feel like it. We have had an OCS (over the start line early) and finished 18th in a race on the first day, so we need to work on that, but the result at the minute is great."

Westerhof and Berkhout count two firsts and two seconds with that DSQ and 18th - but headline interest in this fleet goes further down the scoring list. Ingrid Petitjean and Nadège Douroux lead French compatriots Emmanuelle Rol and Hélène Defrance by one point in the ISAF Sailing World Cup standings, and by just one place in the regatta - they are fourth and fifth.

We talked about three (other) French teams yesterday, all with exceptional leads in their fleets - and while all of them held onto those leads, it was a struggle. In the Men's 470, Pierre Leboucher and Vincent Garos scored a 12th and a second, and are now just two points ahead of Australian World Champions, Mathew Belcher and Malcolm Page. And it's a hot Aussie breath on the back of French necks. "We're having a good regatta," said Belcher, "we got two seconds today and things are going well. Obviously we've won the [ISAF Sailing] World Cup and the World Championships, so it's been a great year and we never expected to be able to head into this event with the World Cup title wrapped up, so it's a great position to be in."

It the 49er, Frenchmen Manu Dyen and Stéphane Christidis had recorded a 2, 2, 2, 1, 1 up to this morning, but today they could only add a third and an eleventh. The chasing Kiwis, Peter Burling and Blair Tuke, didn't fair much better with a second and a 14th, and now find themselves just one point ahead of both their cross-Tasman rivals, Nathan Outteridge and Iain Jensen, and the British team of Stephen Morrison and Ben Rhodes. The latter crew had an outstanding day with a first and a third, and Morrison said afterwards, "It wasn't very easy to make big gains, it was tough on the start and it was generally one sided, and pretty much down to boat speed". Clearly, the British pair weren't lacking in that commodity today.

In the Finn, the French high-flier yesterday was Jonathan Lobert, with a first and two seconds. But overnight, three of the major contenders, Ben Ainslie (GBR),Dan Slater (NZL) and Ed Wright (GBR) got awarded average points for yesterday's race, because of confusion over a change of course. The trio got those average points calculated on all their other races up to the end of today. So Ben Ainslie promptly went out and scored two seconds - hitting the kind of form that's won him more Finn bling than we can count. And so he's now up to second, 5.5 points behind Lobert...

In the Men's RS:X, Brit Nick Dempsey now leads overall after a great day, scoring a first and a second. Dempsey's agreed with his compatriot, Stephen Morrison (49er) about the start, "The difficult thing today was the starts, you could win or lose the race by the way you performed on the line so it was really important to ensure a safe start." And finally, we can't leave without a nod to the Laser Radial fleet, who were out there till late afternoon before they could get off the start line cleanly. No shortage of competitive athletes then, with Dutch girl, Marit Bouwmeester, now even at the top of the leaderboard with France's Sophie De Turckheim.

The battle between Damien Seguin (FRA) and Thierry Schmitter (NED) in the 2.4mR continues with every race with the Frenchman leading the Dutchman by a single point. The Sonar class has sailed six races and with the discard coming into play Udo Hessels and Mischa Rossen (NED) maintain their lead over Robertson and Stodel (GBR) by four points.

In the Lasers, Tom Slingsby (AUS) looked to be heading for the top of the leaderboard with four consecutive bullets but a black flag in the final race of the day stopped his progress in its tracks. Meanwhile Olympic Champion Paul Goodison (GBR) continues to pump out the consistent performances and now leads the fleet by six points from Andrew Murdoch (NZL)

Tom Burton (AUS) and Alison Young (GBR) hit the right note in the Laser and Laser Radial at ISAF Sailing World Cup Melbourne as they took out the top honours and qualification spots to the 2015 ISAF Sailing World Cup Final.

It was double Australian gold in the Paralympic classes. Matt Bugg (AUS) came out on top in the 2.4mR whilst London 2012 Paralympic SKUD18 gold medallists Dan Fitzgibbon and Liesl Tesch (AUS) were triumphant in the two person keelboat.

Lithuania's Juozas Bernotas came out on top in the Men's RS:X whilst Russia's Stefania Elfutina was triumphant in the Women's RS:X. Both sailors claim the first Abu Dhabi ISAF Sailing World Cup Final spots whilst Jock Calvert (AUS) and Joanna Sterling (AUS) picked up the Oceanic spots for the Emirati finale.

There was some fast paced action in the 49er and 49erFX Medal Races at ISAF Sailing World Cup Melbourne as Nathan Outteridge & Iain Jensen (AUS) and Maia & Ragna Agerup (NOR) claimed the honours and Abu Dhabi final spots.

A tight group of five young Papua New Guinean (PNG) Laser sailors are stepping up their 2015 Pacific Games competition program using this week's ISAF Sailing World Cup Melbourne. PNG is one of 33 countries represented at the important Oceanic event, the largest Olympic sailing regatta in the southern hemisphere.

Melbourne, Australia will host the final Rio 2016 Paralympic Games qualification regatta in 2015. With just under one year until the event, the 2015 IFDS Worlds was launched at ISAF Sailing World Cup Melbourne.

ISAF Sailing World Cup Melbourne kick starts the journey to the 2015 ISAF Sailing World Cup Final in Abu Dhabi, United Arab Emirates with qualification spots and top ranking points available in the Australian city.

Shawn Bennett (USA) won the Long Beach Stop of the 2015 California Dreamin' Series Sunday in this International Sailing Federation (ISAF) Grade 3 match racing regatta hosted by Long Beach Yacht Club and raced on the Long Beach Sailing Foundation's fleet of Catalina 37s.

After the limits of the southern oceans imposed by the combination of the weather systems and the safety barrier of the Antarctic Exclusion Zone, the Atlantic is opening up for the top trio of the Barcelona World Race.